Supposedly they have all been real live pipe bombs, but who knows who is telling the truth anymore.
How would these “real live pipe bombs” work without a detonations source?
The timer is just a clock, no Piezo circuit, that would be needed to detonate an explosive.
The bombs are fake, they could never go off
Plus who puts wires on each end of the pipe, how would that even work? (except in cartoons)